Turn off your console and restart it after a bit... That has always fixed it for me. P.S. You have my sympathy if that occurred in PvP. The lack of a team color or uniform style makes PvP utter chaos when the UI glitches. *edit* Exiting the game and then launching it again wouldn't solve it for me... I'd have no screen again immediately upon entering crucible unless I turned off the console as well.